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Using ricelands to provide temporary shorebird habitat during migration
Gregory H Golet1, Candace Low2, Simon Avery1
1The Nature Conservancy, Chico, California, 95928, USA.
Summary
California rice fields created temporary wetlands for migrating shorebirds, significantly boosting bird densities. This dynamic conservation approach shows promise for meeting migratory bird needs despite habitat loss.
Area of Science:
- Conservation Science
- Avian Ecology
- Agricultural Ecology
Background:
- Wetland loss in California threatens migratory birds.
- Rice fields offer potential for temporary wetland creation.
- Pacific Flyway shorebirds require critical stopover habitats during migration.
Purpose of the Study:
- To assess the effectiveness of a dynamic conservation incentive program for shorebirds.
- To evaluate the use of harvested rice fields as temporary shorebird habitats.
- To understand shorebird responses to managed wetlands in agricultural landscapes.
Main Methods:
- Implemented a reverse auction to enroll farmers in creating temporary wetlands.
- Monitored shorebird use (density, richness, diversity) in enrolled vs. control fields.
- Used satellite imagery to assess regional shallow-water habitat availability.
Main Results:
- Enrolled fields showed significantly higher shorebird densities than control fields.
- Peak shorebird use occurred during migration periods, especially in fall.
- Shorebird density was negatively related to overall flooded habitat extent, influenced by water availability and drought.
Conclusions:
- Managed agricultural lands, like rice fields, can provide crucial high-value habitat for shorebirds.
- Dynamic conservation programs are effective in mitigating habitat deficits for migratory species.
- Fall presents a particularly impactful season for creating additional shorebird habitat in agricultural areas.
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